Quantification of anions and cations in environmental water samples: Measurement with capillary electrophoresis and indirect-UV detection

Tarja Hiissa, Heli Siren (Corresponding Author), Tapio Kotiaho, Margit Snellman, Aimo Hautojärvi

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The aim of this study was to validate two separation methods for determination of inorganic anions and cations from natural waters with capillary electrophoresis (CE) by using indirect-UV detection. The research is related to method development for screening of groundwater samples obtained in site investigations for spent fuel of the Finnish nuclear industry. In CE analysis, anions were separated in pyromellitic acid (pH 7.7) in the order bromide, chloride, sulphate, nitrite, nitrate, fluoride and dihydrogenphosphate. Cations were separated at pH 3.6 after anions using an 18-crown-6-ether solution. In these analyses, ammonium migrated first followed by potassium, calcium, sodium and magnesium. The concentrations of the ions in the natural water samples were calculated by using two or three calibration curves made using reference solutions at concentration levels of 0.5–250 mg/l. The repeatabilities of the anion and cation methods were tested using laboratory-made reference sample mixtures with high and low salt concentrations. The limits of quantification in the analyses were between 0.02 and 0.1 mg/l, depending on the ion. Concentrations of ions tested in natural waters varied from a few milligrams to tens of grams per litre.
Original languageEnglish
Pages (from-to)403-411
Number of pages9
JournalJournal of Chromatography A
Volume853
Issue number1-2
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

Fingerprint

Capillary electrophoresis
Capillary Electrophoresis
Anions
Cations
Water
Ions
Crown Ethers
Nuclear industry
Spent fuels
Groundwater
Nitrites
Bromides
Fluorides
Ammonium Compounds
Nitrates
Ether
Magnesium
Calibration
Sulfates
Chlorides

Cite this

Hiissa, Tarja ; Siren, Heli ; Kotiaho, Tapio ; Snellman, Margit ; Hautojärvi, Aimo. / Quantification of anions and cations in environmental water samples : Measurement with capillary electrophoresis and indirect-UV detection. In: Journal of Chromatography A. 1999 ; Vol. 853, No. 1-2. pp. 403-411.
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abstract = "The aim of this study was to validate two separation methods for determination of inorganic anions and cations from natural waters with capillary electrophoresis (CE) by using indirect-UV detection. The research is related to method development for screening of groundwater samples obtained in site investigations for spent fuel of the Finnish nuclear industry. In CE analysis, anions were separated in pyromellitic acid (pH 7.7) in the order bromide, chloride, sulphate, nitrite, nitrate, fluoride and dihydrogenphosphate. Cations were separated at pH 3.6 after anions using an 18-crown-6-ether solution. In these analyses, ammonium migrated first followed by potassium, calcium, sodium and magnesium. The concentrations of the ions in the natural water samples were calculated by using two or three calibration curves made using reference solutions at concentration levels of 0.5–250 mg/l. The repeatabilities of the anion and cation methods were tested using laboratory-made reference sample mixtures with high and low salt concentrations. The limits of quantification in the analyses were between 0.02 and 0.1 mg/l, depending on the ion. Concentrations of ions tested in natural waters varied from a few milligrams to tens of grams per litre.",
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Quantification of anions and cations in environmental water samples : Measurement with capillary electrophoresis and indirect-UV detection. / Hiissa, Tarja; Siren, Heli (Corresponding Author); Kotiaho, Tapio; Snellman, Margit; Hautojärvi, Aimo.

In: Journal of Chromatography A, Vol. 853, No. 1-2, 1999, p. 403-411.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Hiissa, Tarja

AU - Siren, Heli

AU - Kotiaho, Tapio

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AU - Hautojärvi, Aimo

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AB - The aim of this study was to validate two separation methods for determination of inorganic anions and cations from natural waters with capillary electrophoresis (CE) by using indirect-UV detection. The research is related to method development for screening of groundwater samples obtained in site investigations for spent fuel of the Finnish nuclear industry. In CE analysis, anions were separated in pyromellitic acid (pH 7.7) in the order bromide, chloride, sulphate, nitrite, nitrate, fluoride and dihydrogenphosphate. Cations were separated at pH 3.6 after anions using an 18-crown-6-ether solution. In these analyses, ammonium migrated first followed by potassium, calcium, sodium and magnesium. The concentrations of the ions in the natural water samples were calculated by using two or three calibration curves made using reference solutions at concentration levels of 0.5–250 mg/l. The repeatabilities of the anion and cation methods were tested using laboratory-made reference sample mixtures with high and low salt concentrations. The limits of quantification in the analyses were between 0.02 and 0.1 mg/l, depending on the ion. Concentrations of ions tested in natural waters varied from a few milligrams to tens of grams per litre.

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